32,722 reputation
24090
bio website cs.toronto.edu/~yuvalf
location Princeton, NJ
age 32
visits member for 4 years, 5 months
seen 3 hours ago

Postdoc in the IAS.


2d
answered Why can a set of edges of a bipartite graph with maximum degree d be partitioned in d matchings ?
Jan
23
comment What is the meaning of the notation $]1, 1[$?
Why old-fashioned? This is the standard French convention.
Jan
23
answered Factorization of a Polynomials
Jan
23
answered Are functions infinite dimensional vectors?
Jan
23
answered Evaluate $\lim_{n \rightarrow \infty} \frac {[(n+1)(n+2)\cdots(n+n)]^{1/n}}{n}$
Jan
23
answered Flipping sign of $i$s
Jan
21
comment Law of large numbers and identically distributed variables
The idea of the law of large numbers is that the expectation is what you get when you average a large number of copies of your random variable. The method of the proof can be used to prove other results.
Jan
21
answered Sum $\sum_{x=1}^n\sum _{y=1}^{x-1}\frac{1/2^x*1/2^y}{1/2^x+1/2^y}$
Jan
21
comment Sum $\sum_{x=1}^n\sum _{y=1}^{x-1}\frac{1/2^x*1/2^y}{1/2^x+1/2^y}$
You can simplify the summand to $\frac{1}{2^x+2^y}$.
Jan
21
comment Sum $\sum_{x=1}^n\sum _{y=1}^{x-1}\frac{1/2^x*1/2^y}{1/2^x+1/2^y}$
Judging from the first few values, probably not.
Jan
21
answered Law of large numbers and identically distributed variables
Jan
16
awarded  Notable Question
Jan
7
awarded  Enlightened
Jan
7
comment Bounding the difference between $H_N$ and $\log N$
You can even obtain a complete asymptotic expansion in negative powers of $N$.
Jan
7
answered Limit of $ \int_{0}^{\frac{\pi}{2}}\sin^n xdx$ and probability
Jan
7
comment Sum $\sum_{n=1}^\infty \frac{n^2}{(n+2)!}$
This is actually not the correct identity. The identity you really want to use is $n^2 = (n+2)(n+1) - 3(n+2) + 4$.
Jan
7
answered Sum $\sum_{n=1}^\infty \frac{n^2}{(n+2)!}$
Jan
6
awarded  Nice Answer
Jan
6
revised Limit of $\lim \limits_{x \rightarrow \infty}\frac{(x!)^n}{(ax)!}$
added 80 characters in body
Jan
6
answered Limit of $\lim \limits_{x \rightarrow \infty}\frac{(x!)^n}{(ax)!}$